关键词: 功能比较系数, 环渤海地区, 粮食生产地域功能指数, 综合评价

Abstract:

Territorial function of grain production in various regions has a significant spatial heterogeneity and temporal variability. To strengthen the function of grain production at county-levels, to ensure national grain security and to improve farmers' income, it is of great practical significance to conduct a deep evaluation and classification research on grain production function. Taking the 327 counties in the area along Bohai rim as the research units, this paper constructs an evaluation index system for grain production function and an index analysis model, to evaluate and grade the functions of grain production in 1990 and 2007. The result demonstrates that grain-oriented functional areas are mainly distributed in the northern part of the plain area in central Liaoning province. The grain production function of counties in the piedmont plain of Taihang mountain and alluvial plain region of Haihe river takes the second place. The counties in mountainous-hilly areas, tableland areas and densely populated city areas, have weak grain production function. On the whole, the grain production function showed an increasing tendency from the year 1990 to 2007. The function of grain production has been improved significantly in plain areas and has been weakened as the implementation of Conversion of Cropland to Forest and Grassland Project in mountainous-hilly areas. It has been shown a strong downward trend in cities and their surrounding counties as the sharp reduction of cultivated lands and the swift growth of regional population. Moreover, based on grain function index and its dynamic changes, combined with the regional total grain production and regional development orientations, the research regions fall into four types: national commodity grain base, provincial commodity grain base, city commodity grain base and general grain producing region. Finally, this paper explores the innovation mechanisms and favorable policies to enhance the grain production function of each county and to optimize the allocation of production factors, including the financial transfer payment, regional economic compensation, and government performance assessment, which provide a scientific guidance for coordinated development and sustainable growth of farmers' income.

Key words: comparing coefficient of grain production function, comprehensive evaluation, the area along Bohai rim in China, the index for grain production function evaluation